20310131000 has 32 divisors (see below), whose sum is σ = 47525708880. Its totient is φ = 8124052000.

The previous prime is 20310130999. The next prime is 20310131003. The reversal of 20310131000 is 13101302.

It is a super-2 number, since 2×20310131000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310131003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10154066 + ... + 10156065.

Almost surely, 2^20310131000 is an apocalyptic number.

20310131000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310131000 is an abundant number, since it is smaller than the sum of its proper divisors (27215577880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310131000 is a wasteful number, since it uses less digits than its factorization.

20310131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310152 (or 20310138 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20310131000 its reverse (13101302), we get a palindrome (20323232302).

The spelling of 20310131000 in words is "twenty billion, three hundred ten million, one hundred thirty-one thousand".